Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/34—Alcohols
  • A61K8/342—Alcohols having more than seven atoms in an unbroken chain
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
  • A61K8/41—Amines
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
  • A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
  • A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
  • A61K8/447—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof containing sulfur
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/55—Phosphorus compounds
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/55—Phosphorus compounds
  • A61K8/556—Derivatives containing from 2 to 10 oxyalkylene groups
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/58—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing atoms other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur or phosphorus
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
  • A61K8/817—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Compositions or derivatives of such polymers, e.g. vinylimidazol, vinylcaprolactame, allylamines (Polyquaternium 6)
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
  • A61K8/86—Polyethers
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q5/00—Preparations for care of the hair
  • A61Q5/04—Preparations for permanent waving or straightening the hair
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q9/00—Preparations for removing hair or for aiding hair removal
  • A61Q9/04—Depilatories
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
  • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
  • A61K2800/59—Mixtures
  • A61K2800/596—Mixtures of surface active compounds

Definitions

• the present invention relates to a non-colouring composition
• a non-colouring composition comprising one or more sulfureous, preferably thiol-based, reducing agents, one or more phosphoric surfactants, one or more nonionic surfactants other than the phosphate surfactants, and one or more non-liquid fatty substances in a particular content.
• the invention also relates to a process for permanently reshaping keratin fibres, in particular human keratin fibres such as the hair, comprising the use on the said fibres of the composition defined above and optionally of an oxidizing composition.
• the techniques used for permanently reshaping the hair generally consist in applying a reducing composition containing a reducing agent, generally a thiol-based reducing agent, at neutral or moderately alkaline pH values, below 10.
• hair-removing compositions may comprise a reducing agent, often a thiol-based reducing agent, at very high pH values, generally above 11.
• Reducing agents generally have a strong odour, which is found on application to various keratin substrates. This is particularly experienced during application to the hair and while they are left to stand on the hair.
• reducing agents may also lead to degradation of the hair during permanent reshaping treatments.
• compositions which are intended to be used during a process for permanently reshaping keratin fibres or in a hair-removing composition, which do not have all the drawbacks described above, i.e. which give off less odour so as to make the applications of the compositions more comfortable for users.
• compositions which are intended to be used during a process for permanently reshaping keratin fibres or in a hair-removing composition, which generate even less unpleasant odour.
• the Applicant has discovered, surprisingly, that it is possible to achieve the desired properties by combining, in a non-colouring composition, one or more sulfureous reducing agents, one or more phosphoric surfactants, one or more nonionic surfactants other than the phosphoric surfactants, and at least 5.0% of non-liquid fatty substance(s).
• composition according to the invention makes it possible to reduce the evolution of ammonia and of volatile sulfureous compounds during the application to keratin substrates, which limits the odours perceived.
• compositions intended to be used during a process for permanently reshaping keratin fibres good friendliness towards the integrity of the fibres is found.
• a first subject of the present invention is thus a non-colouring composition
• a non-colouring composition comprising:
• a subject of the invention is also a process for permanently reshaping, especially for straightening or perming, keratin fibres, in particular human keratin fibres such as the hair, which consists in performing the following steps:
• a subject of the invention is also the use of the composition defined previously for permanently reshaping the hair or for hair removal.
• composition according to the invention is non-colouring, i.e. it does not give the keratin fibres a visible colouring after removal of the said composition.
• it does not comprise any colouring agent.
• colouring agents means agents for colouring keratin fibres such as direct dyes or oxidation dye precursors (bases and couplers). If they are present, their content does not exceed 0.001% by weight, relative to the total weight of the composition. Specifically, at such a content, only the composition would be dyed, i.e. no dyeing effect would be observed on the keratin fibres.
• oxidation dye precursors, oxidation bases and couplers are colourless or sparingly coloured compounds, which, via a condensation reaction in the presence of an oxidizing agent, give a coloured species.
• direct dyes these compounds are coloured and have affinity for keratin fibres.
• the composition according to the invention comprises one or more sulfureous reducing agents, preferably chosen from the reducing agents of formula: H(X') q (R') r in which X' represents S or SO 2 , q is 1, r is 1 or 2 or 3, and R' is a linear, branched, saturated or unsaturated C 1 -C 20 hydrocarbon-based radical, optionally interrupted with a heteroatom, and optionally comprising substituents chosen from a hydroxyl group, a halogenated group, an amine group, a salified or non-salified carboxyl group, a (C 1 -C 30 alkoxy)carbonyl group, an amido group, a (C 1 -C 30 alkyl)aminocarbonyl group, a (C 1 -C 30 acyl)amino group, a monoalkylamino or dialkylamino group, or a monohydroxyamino or dihydroxyamino group, or a salt thereof in combination with
• the sulfureous reducing agent(s) used in the composition according to the invention are chosen from thiol-based and non-thiol-based reducing agents.
• thiol-based reducing agents that may be used in the composition according to the invention, mention may be made of thiol-based reducing agents chosen from thioglycolic acid, thiolactic acid, cysteine, cysteamine, homocysteine, glutathione, thioglycerol, thiomalic acid, 2-mercaptopropionic acid, 3-mercaptopropionic acid, thiodiglycol, 2-mercaptoethanol, dithiothreitol, thioxanthine, thiosalicylic acid, thiopropionic acid, lipoic acid and N-acetylcysteine, and salts thereof.
• thiol-based reducing agents chosen from thioglycolic acid, thiolactic acid, cysteine, cysteamine, homocysteine, glutathione, thioglycerol, thiomalic acid, 2-mercaptopropionic acid, 3-mercaptopropionic acid, thi
• non-thiol-based reducing agents that may be used in the composition according to the invention, mention may be made especially of alkali metal or alkaline-earth metal sulfites.
• the sulfureous reducing agent(s) used in the composition according to the invention are thiol-based reducing agents, in particular thioglycolic acid and thiolactic acid or salts thereof, especially alkali metal, alkaline-earth metal or ammonium salts thereof, or cysteine, and mixtures thereof.
• the sulfureous reducing agent used in the composition according to the invention is thioglycolic acid and salts thereof, especially ammonium thioglycolate or potassium thioglycolate, or cysteine.
• the sulfureous reducing agent(s) may be present in the composition according to the invention in a content ranging from 1% to 50% by weight, or 1.0% to 20.0% by weight, preferably in a content ranging from 2.0% to 15.0% by weight relative to the total weight of the composition.
• composition according to the invention comprises at least one phosphoric surfactant.
• phosphoric surfactant means a surfactant whose polar part comprises at least one phosphorus atom.
• the phosphoric surfactant may have the following formula: in which: R 1 , R 2 and R 3 , which may be identical or different, represent a group chosen from:
• the phosphoric surfactant may be chosen from alkoxylated fatty alcohol phosphates containing from 12 to 20 carbon atoms with from 1 to 50 mol of alkylene oxide chosen from ethylene oxide and propylene oxide, and non-alkoxylated alcohol dialkyl phosphates containing from 12 to 22 carbon atoms, and mixtures thereof.
• the alkyl group of the fatty alcohol or of the non-alkoxylated alcohol may be linear or branched, or a saturated or unsaturated alkyl group.
• use may be made of a combination of at least one oxyalkylenated phosphoric surfactant and of at least one non-oxyalkylenated phosphoric surfactant.
• the combination of phosphoric surfactants may be chosen from the group consisting of a combination of ceteth-10 phosphate and dicetyl phosphate, a combination of ceteth-20 phosphate and dicetyl phosphate, and a combination of oleth-5 phosphate and dioleyl phosphate.
• Crodafos CES As product comprising the combination of ceteth-10 phosphate and dicetyl phosphate, mention may be made of Crodafos CES or Crodafos CES-PA, sold by Croda. As product comprising the combination of ceteth-20 phosphate and dicetyl phosphate, mention may be made of Crodafos CS-20 Acid, sold by Croda. As product comprising the combination of oleth-5 phosphate and dioleyl phosphate, mention may be made of Crodafos HCE, sold by Croda.
• the phosphoric surfactant(s) may be present in the composition according to the invention in a content ranging from 0.01% to 20.0% by weight, preferably in a content ranging from 0.1% to 15.0% by weight and better still in a content ranging from 0.2% to 10.0% by weight relative to the total weight of the composition.
• the ratio by weight between the amount of sulfureous reducing agent(s), on the one hand, and the amount of phosphoric surfactant(s), on the other hand is greater than or equal to 0.5 and preferably ranges from 1 to 30 and more preferably from 1 to 20.
• composition according to the invention also comprises a nonionic surfactant other than phosphoric surfactants.
• nonionic surfactants examples include but are not limited to, in the Handbook of Surfactants by M.R. Porter, published by Blackie & Son (Glasgow and London), 1991, pp. 116-178 .
• nonionic surfactants other than phosphoric surfactants, mention may be made of the following nonionic surfactants, alone or as mixtures:
• the oxyalkylene units are more particularly oxyethylene or oxypropylene units, or a combination thereof.
• the number of moles of ethylene oxide and/or of propylene oxide preferably ranges from 1 to 100 and more particularly from 2 to 50; the number of moles of glycerol ranges in particular from 1 to 30.
• glycerolated nonionic surfactants use may preferably be made of monoglycerolated or polyglycerolated C 8 -C 40 alcohols comprising from 1 to 30 mol of glycerol, preferably from 1 to 10 mol of glycerol.
• lauryl alcohol containing 4 mol of glycerol (INCI name: Polyglyceryl-4 Lauryl Ether), lauryl alcohol containing 1.5 mol of glycerol, oleyl alcohol containing 4 mol of glycerol (INCI name: Polyglyceryl-4 Oleyl Ether), oleyl alcohol containing 2 mol of glycerol (INCI name: Polyglyceryl-2 Oleyl Ether), cetearyl alcohol containing 2 mol of glycerol, cetearyl alcohol containing 6 mol of glycerol, oleocetyl alcohol containing 6 mol of glycerol, and octadecanol containing 6 mol of glycerol.
• glycerolated alcohols it is more particularly preferred to use the C 8 /C 10 alcohol containing 1 mol of glycerol, the C 10 /C 12 alcohol containing 1 mol of glycerol and the C 12 alcohol containing 1.5 mol of glycerol.
• the nonionic surfactant(s) are chosen from:
• the nonionic surfactants other than the phosphoric surfactants are chosen from oxyethylenated and/or oxypropylenated C 8 -C 30 alcohols comprising from 1 to 100 mol of ethylene oxide and/or of propylene oxide, preferably from 2 to 50 and more particularly from 2 to 30 mol of ethylene oxide and/or of propylene oxide.
• the content of nonionic surfactant(s) ranges from 0.01% to 30.0% by weight, preferably from 0.1% to 20.0% by weight and more preferably from 1.0% to 10.0% by weight relative to the total weight of the composition.
• composition according to the invention also comprises one or more fatty substances comprising fatty alcohols, that are not liquid at room temperature (25°C) and at atmospheric pressure (760 mmHg, i.e. 1.013 ⁇ 10 5 Pa).
• fatty substance means an organic compound that is insoluble in water at ordinary room temperature (25°C) and at atmospheric pressure (760 mmHg, i.e. 1.013 ⁇ 10 5 Pa), with a solubility in water of less than 5%, preferably less than 1% and even more preferentially less than 0.1%.
• the fatty substances are generally soluble in organic solvents under the same temperature and pressure conditions, for instance chloroform, ethanol, benzene, liquid petroleum jelly or decamethylcyclopentasiloxane.
• non-liquid fatty substance means a solid compound or a compound that has a viscosity of greater than 2 Pa.s at a temperature of 25°C and at a shear rate of 1 s -1 .
• the non-liquid fatty substances are chosen from non-silicone non-liquid fatty substances.
• the non-silicone non-liquid fatty substances are chosen from fatty alcohols, fatty acid and/or fatty alcohol esters, non-silicone waxes, fatty amines and fatty ethers, which are non-liquid and preferably solid.
• non-liquid fatty alcohols according to the invention are chosen from linear or branched, saturated or unsaturated alcohols containing from 8 to 30 carbon atoms.
• cetyl alcohol examples that may preferably be mentioned include cetyl alcohol, stearyl alcohol and a mixture thereof (cetylstearyl alcohol). Cetylstearyl alcohol is more particularly used.
• non-liquid esters of fatty acids and/or of fatty alcohols that may be used in the composition according to the invention are generally chosen from solid esters derived from C 9 -C 26 fatty acids and from C 9 -C 26 fatty alcohols.
• Examples that may preferably be mentioned include octyldodecyl behenate, isocetyl behenate, cetyl lactate, stearyl octanoate, octyl octanoate, cetyl octanoate, decyl oleate, myristyl stearate, octyl palmitate, octyl pelargonate, octyl stearate, alkyl myristates such as cetyl myristate, myristyl myristate and stearyl myristate, and hexyl stearate.
• the non-silicone wax(es) are chosen especially from carnauba wax, candelilla wax, esparto wax, paraffin wax, ozokerite, plant waxes, such as olive tree wax, rice wax, hydrogenated jojoba wax or absolute flower waxes, such as the blackcurrant blossom essential wax sold by Bertin (France), or animal waxes, such as beeswaxes or modified beeswaxes (cerabellina), and ceramides.
• the solid amides that may be used in the composition according to the invention are chosen from ceramides or ceramide analogues, such as the natural or synthetic glycoceramides corresponding to formula (III) below: in which:
• ceramides that are preferred in the context of the present invention are those described by Downing in Arch. Dermatol., Vol. 123, 1381-1384, 1987 , or those described in French patent FR 2 673 179 .
• the ceramide(s) more particularly preferred that may be used in the composition according to the invention are the compounds for which R' denotes a saturated or unsaturated alkyl derived from C 16 -C 22 fatty acids; R" denotes a hydrogen atom; and R''' denotes a linear, saturated C 15 radical.
• the following compounds may especially be chosen: N-linoleoyldihydrosphingosine, N-oleoyldihydrosphingosine, N-palmitoyldihydrosphingosine, N-stearoyldihydrosphingosine, N-behenoyldihydrosphingosine, and a mixture of these compounds.
• Other waxes or waxy starting materials that may be used according to the invention are especially marine waxes such as those sold by the company Sophim under the reference M82, and waxes of polyethylene or of polyolefins in general.
• non-liquid fatty ethers that may be used in the composition according to the invention are chosen from dialkyl ethers and especially dicetyl ether and distearyl ether, alone or as a mixture.
• the non-liquid fatty substance(s) may be chosen from silicone non-liquid fatty substances, such as silicone gums or resins.
• the silicone gums that may be used in accordance with the invention are especially polydialkylsiloxanes and preferably polydimethylsiloxanes with high number-average molecular weights ranging from 200 000 to 1 000 000, used alone or as a mixture in a solvent.
• the said solvent may be chosen from volatile silicones, polydimethylsiloxane (PDMS) oils, polyphenylmethylsiloxane (PPMS) oils, isoparaffins, polyisobutylenes, methylene chloride, pentane, dodecane and tridecane, or mixtures thereof.
• volatile silicones polydimethylsiloxane (PDMS) oils, polyphenylmethylsiloxane (PPMS) oils, isoparaffins, polyisobutylenes, methylene chloride, pentane, dodecane and tridecane, or mixtures thereof.
• Products that may be used more particularly in accordance with the invention are mixtures such as:
• the organopolysiloxane resins that may be used in accordance with the invention are crosslinked siloxane systems containing the following units: (R 7 ) 2 SiO 2/2 , (R 7 ) 3 SiO 1/2 , R 7 SiO 3/2 and SiO 4/2 in which R 7 represents an alkyl containing 1 to 16 carbon atoms.
• R 7 represents an alkyl containing 1 to 16 carbon atoms.
• the ones that are particularly preferred are those in which R 7 denotes a C 1 -C 4 lower alkyl group, more particularly methyl.
• the non-liquid fatty substance(s) are non-silicone and even more preferentially are chosen from fatty alcohols, even more preferentially from cetyl alcohol, stearyl alcohol and mixtures thereof such as cetylstearyl alcohol.
• the composition according to the invention comprises one or more non-liquid fatty substance(s) comprising fatty alcohols, in a content ranging from 7.0% to 60.0% by weight, better still from 7.0% to 30.0% by weight, preferably from 7.0% to 25.0% by weight and more preferably from 8% to 25% by weight relative to the total weight of the composition.
• composition according to the invention may also comprise one or more fatty substances that are liquid at room temperature and at atmospheric pressure.
• the liquid fatty substances of the invention preferably have a viscosity of less than or equal to 2 Pa.s, better still less than or equal to 1 Pa.s and even better still less than or equal to 0.1 Pa.s at a temperature of 25°C and at a shear rate of 1 s -1 .
• liquid fatty substances of the invention may be non-silicone, i.e. they do not comprise in their structure any -Si-O-Si- sequences.
• liquid fatty substance(s) that may be used in the composition according to the invention may be chosen from liquid non-silicone fatty substances.
• non-silicone liquid fatty substances that may be used in the composition according to the invention are chosen from hydrocarbons, fatty alcohols, fatty acid and/or fatty alcohol esters, non-salified fatty acids and fatty-chain alkoxysilanes.
• the non-silicone liquid fatty substances generally have in their structure a hydrocarbon-based chain comprising at least 6 carbon atoms.
• liquid hydrocarbon means a hydrocarbon composed solely of carbon and hydrogen atoms, which is liquid at standard temperature (25°C) and at atmospheric pressure (760 mmHg, i.e. 1.013 ⁇ 10 5 Pa).
• liquid hydrocarbons that may be used in the composition according to the invention are chosen from:
• the liquid hydrocarbon(s) are chosen from liquid paraffins, isoparaffins, liquid petroleum jelly, undecane, tridecane and isododecane, and mixtures thereof.
• liquid hydrocarbon(s) are chosen from liquid paraffin, liquid petroleum jelly, isoparaffins, isododecane and a mixture of undecane and tridecane.
• liquid fatty alcohol means a non-glycerolated and non-oxyalkylenated fatty alcohol, which is liquid at standard temperature (25°C) and at atmospheric pressure (760 mmHg, i.e. 1.013 ⁇ 10 5 Pa).
• the liquid fatty alcohols that may be used in the composition according to the invention comprise from 8 to 30 carbon atoms and they may be saturated or unsaturated.
• the saturated liquid fatty alcohols are preferably branched. They may optionally comprise in their structure at least one aromatic or non-aromatic ring. They are preferably acyclic.
• saturated liquid fatty alcohols that may be used in the composition according to the invention are chosen from octyldodecanol, 2-decyltetradecanol, isostearyl alcohol and 2-hexyldecanol.
• Octyldodecanol and 2-decyltetradecanol are most particularly preferred.
• the unsaturated liquid fatty alcohols contain in their structure at least one double or triple bond, and preferably one or more double bonds. When several double bonds are present, there are preferably 2 or 3 of them, and they may be conjugated or unconjugated.
• These unsaturated fatty alcohols may be linear or branched.
• They may optionally comprise in their structure at least one aromatic or non-aromatic ring. They are preferably acyclic.
• the unsaturated liquid fatty alcohols that may be used in the composition according to the invention are chosen from oleyl alcohol, linoleyl alcohol, linolenyl alcohol and undecylenyl alcohol.
• Oleyl alcohol is most particularly preferred.
• liquid fatty ester means an ester derived from a fatty acid and/or from a fatty alcohol that is liquid at standard temperature (25°C) and at atmospheric pressure (760 mmHg, i.e. 1.013 ⁇ 10 5 Pa).
• liquid esters are chosen from saturated or unsaturated, linear or branched C 1 -C 26 aliphatic mono- or polyacids and of saturated or unsaturated, linear or branched C 1 C 26 aliphatic mono- or polyalcohols, the total number of carbon atoms in the esters being greater than or equal to 10.
• At least one of the alcohol or of the acid from which the esters of the invention result is branched.
• ethyl palmitate isopropyl palmitate
• alkyl myristates such as isopropyl myristate or ethyl myristate
• isocetyl stearate 2-ethylhexyl isononanoate
• isodecyl neopentanoate isostearyl neopentanoate.
• Esters of C 4 -C 22 dicarboxylic or tricarboxylic acids and of C 1 -C 22 alcohols and esters of monocarboxylic, dicarboxylic or tricarboxylic acids and of C 4 -C 26 dihydroxy, trihydroxy, tetrahydroxy or pentahydroxy non-sugar alcohols may be used.
• esters mentioned above use is preferentially made of ethyl, isopropyl, myristyl, cetyl or stearyl palmitate, 2-ethylhexyl palmitate, 2-octyldecyl palmitate, alkyl myristates such as isopropyl, butyl, cetyl or 2-octyldodecyl myristate, hexyl stearate, propylene glycol dicaprylate, butyl stearate, isobutyl stearate; dioctyl malate, hexyl laurate, 2-hexyldecyl laurate, isononyl isononanoate or cetyl octanoate.
• alkyl myristates such as isopropyl, butyl, cetyl or 2-octyldodecyl myristate, hexyl stearate, propylene glycol
• liquid fatty esters use may be made of sugar esters and diesters of C 6 -C 30 and preferably C 12 -C 22 fatty acids.
• sugar means oxygen-bearing hydrocarbon-based compounds containing several alcohol functions, with or without aldehyde or ketone functions, and which comprise at least 4 carbon atoms. These sugars may be monosaccharides, oligosaccharides or polysaccharides.
• the said sugars are chosen from saccharose, glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose and lactose, and derivatives thereof, especially alkyl derivatives, such as methyl derivatives, for instance methylglucose.
• the sugar esters of fatty acids may be chosen especially from the group comprising the esters or mixtures of esters of sugars described previously and of linear or branched, saturated or unsaturated C 6 -C 30 and preferably C 12 -C 22 fatty acids.
• these compounds may comprise one to three conjugated or unconjugated carbon-carbon double bonds.
• esters according to this variant may also be chosen from mono-, di-, tri- and tetraesters, and polyesters, and mixtures thereof.
• the said esters may be chosen, for example, from oleates, laurates, palmitates, myristates, behenates, cocoates, stearates, linoleates, linolenates, caprates and arachidonates, or mixtures thereof, such as, in particular, oleopalmitate, oleostearate or palmitostearate mixed esters.
• Glucate® DO methylglucose dioleate
• pentaerythrityl esters preferably pentaerythrityl tetraisostearate, pentaerythrityl tetraoctanoate, and caprylic and capric hexaesters as a mixture with dipentaerythritol.
• the said plant oil(s) or synthetic oil(s) are chosen from triglyceride oils of plant or synthetic origin, such as liquid fatty acid triglycerides containing from 6 to 30 carbon atoms, for instance heptanoic or octanoic acid triglycerides, or alternatively, for example, sesame oil, soybean oil, coffee oil, safflower oil, borage oil, sunflower oil, olive oil, apricot kernel oil, camellia oil, bambara pea oil, avocado oil, mango oil, rice bran oil, cotton seed oil, rose oil, kiwi seed oil, sea buckthorn pulp oil, blueberry seed oil, poppy seed oil, orange pip oil, sweet almond oil, palm oil, coconut oil, vernonia oil, marjoram oil, baobab oil, rapeseed oil, ximenia oil, pracaxi oil, caprylic/capric acid triglycerides such as those sold by the company Stéarineries Dubois
• liquid esters that may be used according to the invention, use is preferably made of triglycerides of plant origin, in particular oils chosen from avocado oil, olive oil, camellia oil and apricot kernel oil, and mixtures thereof, and C 4 -C 22 dicarboxylic or tricarboxylic acid esters of C 1 -C 22 alcohols, in particular 1,3-propanediol dicaprylate.
• oils chosen from avocado oil, olive oil, camellia oil and apricot kernel oil, and mixtures thereof
• C 4 -C 22 dicarboxylic or tricarboxylic acid esters of C 1 -C 22 alcohols in particular 1,3-propanediol dicaprylate.
• fatty acid means a non-salified fatty acid, i.e. the fatty acid must not be in the form of a generally soluble soap, i.e. it must not be salified with a base.
• liquid fatty acids according to the invention are chosen from the acids of formula RCOOH, in which R is a saturated or unsaturated, linear or branched radical preferably comprising from 7 to 39 carbon atoms.
• R is a C 7 -C 29 alkyl or C 7 -C 29 alkenyl group and better still a C 12 -C 24 alkyl or C 12 -C 24 alkenyl group.
• R may be substituted with one or more hydroxyl groups and/or one or more carboxyl groups.
• the liquid fatty acid(s) are chosen from oleic acid, linoleic acid and isostearic acid.
• alkoxysilanes means alkoxysilanes bearing a fatty chain preferentially comprising 16 or 18 carbon atoms.
• the alkoxysilanes may be chosen from hexadecyltriethoxysilane and octadecyltriethoxysilane.
• the liquid non-silicone fatty substance(s) that may be used in the composition according to the invention are chosen from hydrocarbons, in particular linear or branched C 6 -C 16 alkanes and linear or branched hydrocarbons of mineral, animal or synthetic origin, of more than 16 carbon atoms, such as liquid paraffins and derivatives thereof, petroleum jelly, liquid petroleum jelly; fatty acid esters, in particular oils of plant origin and C 4 -C 22 dicarboxylic or tricarboxylic acid esters of C 1 -C 22 alcohols, these esters being chosen more preferentially from triglycerides of plant origin, and liquid fatty alcohols, and mixtures thereof.
• hydrocarbons in particular linear or branched C 6 -C 16 alkanes and linear or branched hydrocarbons of mineral, animal or synthetic origin, of more than 16 carbon atoms, such as liquid paraffins and derivatives thereof, petroleum jelly, liquid petroleum jelly
• fatty acid esters in particular oils of plant origin and C 4 -C 22 di
• non-silicone liquid fatty substance(s) are chosen from liquid petroleum jelly, isoparaffins, isododecane, undecane, tridecane, avocado oil, olive oil, camellia oil, apricot kernel oil, oleic acid and 1,3-propanediol dicaprylate, and mixtures thereof.
• the non-silicone liquid fatty substance(s) are chosen from avocado oil, liquid petroleum jelly and oleic acid, and a mixture thereof.
• liquid fatty substance(s) that may be used in the composition according to the invention may be chosen from silicones.
• the liquid silicone(s) are chosen from polydialkylsiloxanes, in particular polydimethylsiloxanes (PDMSs), and organomodified polysiloxanes comprising at least one functional group chosen from amino groups, aryl groups and alkoxy groups.
• PDMSs polydimethylsiloxanes
• organomodified polysiloxanes comprising at least one functional group chosen from amino groups, aryl groups and alkoxy groups.
• Organopolysiloxanes are defined in greater detail in Walter Noll's Chemistry and Technology of Silicones (1968), Academic Press . They may be volatile or non-volatile.
• the volatile silicones are more particularly chosen from silicones with a boiling point of between 60°C and 260°C, and even more particularly silicones chosen from: (i) cyclic polydialkylsiloxanes comprising from 3 to 7 and preferably from 4 to 5 silicon atoms.
• cyclic polydialkylsiloxanes comprising from 3 to 7 and preferably from 4 to 5 silicon atoms.
• These are, for example, octamethylcyclotetrasiloxane sold in particular under the name Volatile Silicone® 7207 by Union Carbide or Silbione® 70045 V2 by Rhodia, decamethylcyclopentasiloxane sold under the name Volatile Silicone® 7158 by Union Carbide, and Silbione® 70045 V5 by Rhodia, and mixtures thereof.
• decamethyltetrasiloxane sold in particular under the name SH 200 by the company Toray Silicone. Silicones belonging to this category are also described in the article published in Cosmetics and Toiletries, Vol. 91, Jan. 76, pp. 27-32, Todd & Byers, Volatile Silicone Fluids for Cosmetics .
• liquid non-volatile silicones that may be used in the composition according to the invention may preferably be liquid non-volatile polydialkylsiloxanes, polyorganosiloxanes modified with organofunctional groups chosen from amine groups, aryl groups and alkoxy groups, and also mixtures thereof.
• silicones are more particularly chosen from polydialkylsiloxanes, among which mention may be made mainly of polydimethylsiloxanes bearing trimethylsilyl end groups.
• the viscosity of the silicones is measured at 25°C according to ASTM Standard 445 Appendix C.
• CTFA dimethiconol
• organomodified silicones that may be used in accordance with the invention are silicones as defined previously and comprising in their structure one or more organofunctional groups attached via a hydrocarbon-based group.
• the organomodified silicones may be polydiarylsiloxanes, in particular polydiphenylsiloxanes, and polyalkylarylsiloxanes functionalized with the organofunctional groups mentioned previously.
• the polyalkylarylsiloxanes are particularly chosen from linear and/or branched polydimethyl/methylphenylsiloxanes and polydimethyl/diphenylsiloxanes with a viscosity ranging from 1 ⁇ 10 -5 to 5 ⁇ 10 -2 m 2 /s at 25°C.
• Particularly preferred polyalkylarylsiloxanes are phenyl trimethicone according to INCI (CTFA) nomencalature.
• organomodified silicones mention may also be made of polyorganosiloxanes comprising:
• compositions according to the invention comprise at least one non-silicone liquid fatty substance.
• compositions according to the invention comprise one or more liquid fatty substances chosen from hydrocarbons, in particular liquid paraffin or liquid petroleum jelly.
• the composition according to the invention comprises at least one silicone liquid fatty substance, preferably chosen from organomodified silicones, especially polydiarylsiloxanes and polyalkylarylsiloxanes functionalized with organofunctional groups, and preferably phenyl trimethicone.
• the content preferably ranges from 0.01% to 20.0% by weight, better still from 0.1% to 15.0% by weight and even better still from 2.0% to 10.0% by weight relative to the total weight of the composition.
• the composition according to the invention comprises at least 5.0% by weight of at least one non-liquid fatty substance and at least 2.0% by weight of at least one liquid fatty substance.
• the liquid fatty substance is chosen from hydrocarbons, preferably liquid paraffin or liquid petroleum jelly.
• the nonionic surfactant(s) are different from the non-liquid fatty substance(s) previously described.
• composition according to the invention may also optionally comprise one or more cationic polymers.
• cationic polymer means any polymer comprising cationic groups and/or groups that can be ionized to cationic groups.
• the cationic polymer is hydrophilic or amphiphilic.
• the preferred cationic polymers are chosen from those that contain units comprising primary, secondary, tertiary and/or quaternary amine groups that may either form part of the main polymer chain or may be borne by a side substituent directly connected thereto.
• the cationic polymers that may be used preferably have a weight-average molar mass (Mw) of between 500 and 5 ⁇ 10 6 approximately and preferably between 10 3 and 3 ⁇ 10 6 approximately.
• cationic polymers mention may be made more particularly of:
• X - is an anion such as chloride or bromide.
• Mn number-average molar mass
• R1, R2, R3 and R4 which may be identical or different, denote an alkyl or hydroxyalkyl radical containing from 1 to 4 carbon atoms, n and p are integers ranging from 2 to 20, and X - is an anion derived from an organic or mineral acid.
• these polymers may be chosen especially from homopolymers or copolymers comprising one or more units derived from vinylamine and optionally one or more units derived from vinylformamide.
• these cationic polymers are chosen from polymers comprising, in their structure, from 5 mol% to 100 mol% of units corresponding to formula (A) and from 0 to 95 mol% of units corresponding to formula (B), preferentially from 10 mol% to 100 mol% of units corresponding to formula (A) and from 0 to 90 mol% of units corresponding to formula (B).
• These polymers may be obtained, for example, by partial hydrolysis of polyvinylformamide. This hydrolysis may be performed in an acidic or basic medium.
• the weight-average molecular mass of the said polymer measured by light scattering, may range from 1000 to 3 000 000 g/mol, preferably from 10 000 to 1 000 000 g/mol and more particularly from 100 000 to 500 000 g/mol.
• the polymers comprising units of formula (A) and optionally units of formula (B) are sold especially under the name Lupamin by the company BASF, for instance, and in a non-limiting manner, the products sold under the names Lupamin 9095, Lupamin 5095, Lupamin 1095, Lupamin 9030 (or Luviquat 9030) and Lupamin 9010.
• cationic polymers that may be used in the context of the invention are cationic proteins or cationic protein hydrolysates, polyalkyleneimines, in particular polyethyleneimines, polymers comprising vinylpyridine or vinylpyridinium units, condensates of polyamines and of epichlorohydrin, quaternary polyureylenes and chitin derivatives.
• the cationic polymers are chosen from the polymers of families (1), (2), (7) and (10) mentioned above.
• cationic polysaccharides especially cationic celluloses and galactomannan gums, and in particular quaternary cellulose ether derivatives such as the products sold under the name "JR 400" by the company Amerchol
• cationic cyclopolymers in particular dimethyldiallylammonium salt (for example chloride) homopolymers or copolymers, sold under the names Merquat 100, Merquat 550 and Merquat S by the company Nalco
• quaternary polymers of vinylpyrrolidone and of vinylimidazole optionally crosslinked homopolymers or copolymers of methacryloyloxy(C 1 -C 4 )alkyltri(C 1 -C 4 )alkylammonium salts, and mixtures thereof.
• the content preferably ranges from 0.01% to 10.0% by weight, better still from 0.1% to 5.0% by weight and even better still from 0.5% to 3.0% by weight relative to the total weight of the composition.
• composition of the invention generally comprises water or a mixture of water and one or more organic solvents.
• non-aromatic monoalcohols such as ethyl alcohol, isopropyl alcohol, or polyols or polyol ethers, for instance ethylene glycol monomethyl, monoethyl or monobutyl ether, propylene glycol or ethers thereof, for instance propylene glycol monomethyl ether, butylene glycol, dipropylene glycol, and also diethylene glycol alkyl ethers, for instance diethylene glycol monoethyl ether or monobutyl ether, or alternatively polyols such as glycerol.
• Polyethylene glycols and polypropylene glycols, and mixtures of all these compounds, can also be used as solvent.
• the pH of the composition according to the invention generally ranges from 1.5 to 14 and preferably from 7 to 12.7. It may be adjusted by adding either alkaline agents such as aqueous ammonia, monoethanolamine, diethanolamine, triethanolamine, isopropanolamine, 2-methyl-2-amino-1-propanol, 1,3-propanediamine, guanidine, arginine, an alkali metal or ammonium carbonate or bicarbonate, an organic carbonate such as guanidine carbonate, or alternatively an alkali metal hydroxide, or acidifying agents such as hydrochloric acid, acetic acid, lactic acid, boric acid, citric acid and phosphoric acid.
• alkaline agents such as aqueous ammonia, monoethanolamine, diethanolamine, triethanolamine, isopropanolamine, 2-methyl-2-amino-1-propanol, 1,3-propanediamine, guanidine, arginine, an alkali metal or ammonium carbonate or bi
• the composition according to the invention comprises at least one alkaline agent.
• composition may comprise aqueous ammonia, ammonium bicarbonate or one or more alkanolamines, especially monoethanolamine.
• composition in accordance with the invention may also comprise one or more additional cosmetic agents.
• the additional cosmetic agent(s) may be chosen from anionic, nonionic, amphoteric and zwitterionic polymers or mixtures thereof; anionic surfactants other than the phosphoric surfactants of the invention, especially sulfate, sulfonate or carboxylate surfactants, amphoteric surfactants or cationic surfactants; pigments; thickeners; antioxidants; penetrants; sequestrants; fragrances; buffers; dispersants; reduction regulators such as dithio acids, such as dithiodiglycolic acid and salts thereof, film-forming agents; preserving agents; stabilizers; opacifiers; fragrances.
• the above additional cosmetic agents are generally present in an amount, for each of them, of between 0 and 20% by weight relative to the total weight of the composition.
• the composition may comprise one or more thickeners, which may be chosen from natural or synthetic, anionic, amphoteric, zwitterionic, nonionic or cationic, associative or non-associative polymeric thickeners, and non-polymeric thickeners.
• thickeners which may be chosen from natural or synthetic, anionic, amphoteric, zwitterionic, nonionic or cationic, associative or non-associative polymeric thickeners, and non-polymeric thickeners.
• polymeric thickeners examples include cellulose-based thickeners, for example hydroxyethylcellulose, hydroxypropylcellulose and carboxymethylcellulose, guar gum and derivatives thereof, for example hydroxypropyl guar, sold by the company Rhodia under the reference Jaguar HP 105, gums of microbial origin, such as xanthan gum and scleroglucan gum, synthetic polymeric thickeners, such as crosslinked homopolymers of acrylic acid or of acrylamidopropanesulfonic acid, for example Carbomer, or nonionic, anionic or amphoteric associative polymers, such as the polymers sold under the names Pemulen TR1 or TR2 by the company Goodrich, Salcare SC90 by the company Allied Colloids, Aculyn 22, 28, 33, 44 or 46 by the company Rohm & Haas and Elfacos T210 and T212 by the company Akzo.
• cellulose-based thickeners for example hydroxyethylcellulose, hydroxypropylcellulose and carb
• the composition is in the form of a cream.
• composition according to the invention may advantageously have a viscosity at 25°C ranging from 2 to 20 Pa.s, preferentially ranging from 2 to 15 Pa.s and even more preferentially ranging from 2.5 to 10 Pa.s.
• the viscosity of the composition is determined at 25°C using a Rheomat 180 rotary viscometer (Jean LAMY SA) equipped with an anchor/cup type geometer spindle 3 (MS-r 3) or spindle 4 (MS-r4) with a spin speed of 200 rpm and use of the calibration curves provided by the viscometer supplier.
• a Rheomat 180 rotary viscometer Jean LAMY SA
• MS-r 3 anchor/cup type geometer spindle 3
• MS-r4 spindle 4
• the present invention also relates to a process for permanently reshaping, especially for straightening or perming, keratin fibres, in particular human keratin fibres such as the hair, which consists in performing the following steps:
• the leave-on time after application of the composition according to the invention generally ranges from 5 to 60 minutes, particularly from 5 to 45 minutes and preferably from 10 to 45 minutes.
• the oxidizing composition used in step (ii) of the permanent reshaping process conventionally comprises one or more oxidizing agents, in general aqueous hydrogen peroxide solution, an alkali metal bromate, a persalt or a polythionate, and even more preferentially aqueous hydrogen peroxide solution.
• the pH of the oxidizing composition generally ranges from 2 to 10.
• the leave-on time of the oxidizing composition generally ranges from 2 to 30 minutes and preferably from 5 to 15 minutes.
• composition according to the invention is applied to reduce the disulfide bonds of keratin, the keratin fibres being placed under mechanical tension before, during or after the said application.
• mechanical means are preferably used, such as curlers, in order to place the keratin fibres under tension, the composition according to the invention being applied before, during or after the hair-shaping means, preferably before.
• composition in accordance with the present invention may be applied to wet hair that has been rolled up beforehand on rollers that are from 2 to 30 mm in diameter.
• the composition according to the invention may also be applied gradually as the hair is rolled up. Generally, the composition according to the invention is then left to act for a time of from 5 to 60 minutes.
• the head of hair may also be subjected to a heat treatment by heating to a temperature of between 30 and 250°C throughout all or part of the leave-on time.
• this operation may be performed using a hairstyling hood, a hairdryer, a round or flat iron, an infrared ray dispenser or other standard heating appliances.
• the curler itself may be a heating means.
• the oxidizing composition for reforming the disulfide bonds of keratin is then applied to the rolled up or unrolled hair, generally for a leave-on time of 2 to 15 minutes.
• the composition according to the invention is applied to the hair, and the hair is then subjected to mechanical reshaping for fixing the hair in its new shape, by means of a hair straightening operation, with a large-toothed comb, with the back of a comb, by hand or with a brush.
• a leave-on time of from 5 to 60 minutes is generally implemented.
• This application may also be followed by a heating treatment, especially using an iron.
• the straightening of the hair may also be performed, totally or partly, using a heating iron at between 60 and 230°C and preferably between 120 and 230°C.
• the oxidizing composition as defined above is then optionally applied, and is generally left to act for about 2 to 15 minutes, and the hair is then optionally rinsed thoroughly, generally with water.
• the keratin fibres are optionally rinsed.
• the keratin fibres impregnated with the oxidizing composition are rinsed thoroughly with water.
• the keratin fibres may optionally be separated, before or after, from the means needed to keep them under tension.
• the keratin fibres may then be washed with a shampoo, rinsed and dried or left to dry.
• the permanent reshaping process is a process for perming keratin fibres, in particular human keratin fibres such as the hair.
• composition according to the invention may also be used for hair removal.
• compositions A to D according to the invention and comparative composition E were prepared from the ingredients given in the table below, in grams of active material: INCI name A (inv) B (inv) C (inv) D (inv) E (comp) Ammonium bicarbonate - - 2.15 - Diethylenetriaminepentaacetic acid, pentasodium salt 0.16 0.16 0.16 0.16 0.16 Aminomethylpropanol - - - 1 - Aqueous ammonia expressed as NH 3 0.72 0.72 - - 0.72 Diammonium dithiodiglycolate, 3.6 3.6 2.4 - 3.6 Ethanolamine 1.5 1.5 2.5 2.3 1.5 Ammonium thioglycolate 11.78 11.78 8.16 - 11.78 Cysteine - - - 4 - Mineral oil 3 3 3 3 - Cetearyl alcohol 7 7 7 7 8 Fragrance - 0.6 0.6 - - Polydimethyldiallylammonium chloride - 1 1 1 - P
• compositions A, B, C or D 160 to 200 g, depending on the head of hair, of compositions A, B, C or D were applied to prewashed curly and/or voluminous wet hair, lock by lock from the roots to the ends.
• compositions were left to stand on the hairs for a time depending on the degree of sensitization of the hair, namely between 10 and 50 minutes.
• the hairs were rinsed and then dried manually with a towel.
• An oxidizing composition comprising aqueous hydrogen peroxide solution (8 volumes) was then applied to the entire head of hair and left to act for 10 minutes.
• the hair was then dried either under a hood or using a hairdryer with blow-drying followed by an application of flat tongs, or alternatively in the open air.
• compositions A, B and C are straight and smooth with compositions A, B and C, the straightening performance qualities being similar to those for composition E.
• compositions according to the invention markedly less odour is noted with the compositions according to the invention when compared with composition E.
• composition A an evolution of NH 3 of 2821 ppm over 100 s was measured.
• comparative composition E an evolution of NH 3 of 8866 ppm over 100 s was measured.
• an identical content of ammonium thioglycolate a significant reduction of the ammonia odour is thus noted with the composition according to the invention.
• compositions A, B or C 160 to 200 g, depending on the head of hair, of compositions A, B or C were applied to prewashed curly and/or voluminous wet hair, lock by lock from the roots to the ends.
• compositions were left to stand on the hairs for a time depending on the degree of sensitization of the hair, namely between 15 and 45 minutes.
• the hairs were rinsed with warm water and then dried manually with a towel.
• the hairs were then 90% predried using a hairdryer.
• a straightening iron was then passed at a temperature of 190 or 210°C through very fine locks of hair, the iron being passed three times through each lock.
• An oxidizing composition in the form of a cream comprising aqueous hydrogen peroxide solution (8 volumes) was then applied to the entire head of hair and left to act for 10 minutes, followed by rinsing with warm water.
• compositions A, B or C 160 to 200 g, depending on the head of hair, of compositions A, B or C were applied to prewashed straight wet hair, lock by lock from the roots to the ends.
• compositions were left to stand on the hairs for a time depending on the degree of sensitization of the hair, namely between 15 and 45 minutes.
• the hairs were rinsed with warm water and then dried manually with a towel.
• the hairs were then rolled up on heating curlers.
• the hairs were then heated at 50°C for about 20 to 30 minutes.
• the curlers were cooled with a cold hairdryer.
• An oxidizing composition in liquid form comprising aqueous hydrogen peroxide solution (8 volumes) was then applied to the entire head of hair and left to act for 10 minutes.
• the hair was then unrolled from the curlers, followed by rinsing with warm water.
• composition D 100 to 160 g, depending on the head of hair, of composition D were applied to unmanageable prewashed curly and/or voluminous wet hair, lock by lock from the roots to the ends.
• compositions were left to stand on the hairs for a time depending on the degree of sensitization of the hair, namely between 10 and 20 minutes.
• the hairs were rinsed and then dried manually with a towel.
• a leave-in treatment product was applied to the hairs and the hairs were then dried by blow-drying, optionally followed by treating with flat tongs.
• composition D of the invention When compared with a standard product containing cysteine at the same concentration and whose odour is strong and specific, no odour is perceived with composition D of the invention.
• the process using composition D also gives the hair manageability, a reduction of frizziness and volume, and ease of styling.
• composition D may be applied after optional shampooing, and left to stand on the hairs for a shorter time, especially 5 minutes, and this operation may be repeated several times successively.
• Composition D may be applied, for example, between 3 and 5 times consecutively to obtain a reduction in volume and frizziness, manageability of the hair and gentle relaxation, all in a semi-durable manner. This process does not give off any odour.
• Composition F was prepared from the ingredients indicated, in grams of active material, in the table below: INCl name F Urea 8 Diethylenetriaminepentaacetic acid, pentasodium salt 0.16 Potassium hydroxide 0.66 Calcium hydroxide 3.5 Potassium thioglycolate 4.86 Mineral oil 3 Cetearyl alcohol 7 PPG-5-Ceteth-20 3 Mixture of cetearyl alcohol, dicetyl phosphate and oxyethylenated cetyl phosphate (10 OE) (75/14/11) (Crodafos CES-PA from Croda) 5 Water qs 100
• This hair-removing composition F gives off little or no sulfur odour on application or during the leave-on time.

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